Today's Daily Quiz is Live — Test your knowledge & improve your rank
|
Logical Puzzles Medium 3 min

A farmer has chickens and rabbits. There are 20 heads and 56 legs in total. How many chickens and rabbits are there?

Hint
A chicken has 2 legs and a rabbit has 4.

Answer

12 chickens and 8 rabbits.

Explanation

Let chickens be c and rabbits be r. Then c + r = 20 and 2c + 4r = 56. Solving gives r = 8 and c = 12.

Step-by-Step Solution

c + r = 20
2c + 4r = 56
c + 2r = 28
Subtract c + r = 20
r = 8
c = 12
6 puzzles
Six people A, B, C, D, E and F sit in a row. A sits immediately to the left of B. C sits immediately to the right of D. E sits at the extreme left. F sits at the extreme right. Who occupies the two middle positions?
18 views Logical Puzzles
Medium
Five students P, Q, R, S and T scored different marks. P scored more than Q but less than R. S scored less than Q. T scored more than R. Who scored the highest and who scored the lowest?
15 views Logical Puzzles
Hard
Four tasks W, X, Y and Z must be completed one at a time. W must be before X. Y must be before Z. X must be before Y. Which task must be completed third?
26 views Logical Puzzles
Hard
Seven runners finish a race. A finishes before B. B finishes before C. D finishes after C. E finishes before A. F finishes after D. G finishes before E. Who must finish before everyone else?
17 views Logical Puzzles
Expert
A library has books numbered 1 through 50. Every fifth book is placed on a special shelf. How many books are on the special shelf?
15 views Logical Puzzles
Medium
Five people A, B, C, D and E stand in a line. A is immediately before B. C is somewhere after B. D is at the extreme right. E is not next to D. Who must be at position 3?
13 views Logical Puzzles
Medium